C/2015 H2 PANSTARRS
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Comet C/2015 H2 was discovered on 24 April 2015 with Pan-STARRS 1 telescope (Haleakala), that is about 1.4 year before its perihelion passage. Some prediscovery images of this comet were found: taken on 20 April 2015 by Polonia Observatory (San Pedro de Atacama) and 19 May 2014 by Pan-STARRS 1, Haleakala. This comet was observed until 22 October 2019 (is still observable).
Comet had its closest approach to the Earth on 26 June 2016 (4.196 au), about 2.5 months before its perihelion passage.
Solution given here is based on data spanning over 3.51 yr in a range of heliocentric distances: 7.96 au – 4.960 au (perihelion) – 5.97 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that likely lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
Comet had its closest approach to the Earth on 26 June 2016 (4.196 au), about 2.5 months before its perihelion passage.
Solution given here is based on data spanning over 3.51 yr in a range of heliocentric distances: 7.96 au – 4.960 au (perihelion) – 5.97 au.
This Oort spike comet suffers moderate planetary perturbations during its passage through the planetary system that likely lead to escape the comet from the planetary zone on a hyperbolic orbit (see future barycentric orbits).
| solution description | ||
|---|---|---|
| number of observations | 152 | |
| data interval | 2014 05 19 – 2017 11 22 | |
| data type | perihelion within the observation arc (FULL) | |
| data arc selection | entire data set (STD) | |
| range of heliocentric distances | 7.96 au – 4.97 au (perihelion) – 5.97 au | |
| detectability of NG effects in the comet's motion | NG effects not determinable | |
| type of model of motion | GR - gravitational orbit | |
| data weighting | YES | |
| number of residuals | 302 | |
| RMS [arcseconds] | 0.45 | |
| orbit quality class | 1a | |
| orbital elements (barycentric ecliptic J2000) | ||
|---|---|---|
| Epoch | 2316 02 10 | |
| perihelion date | 2016 09 13.87723324 | ± 0.00079613 |
| perihelion distance [au] | 4.96154921 | ± 0.00000569 |
| eccentricity | 1.00251728 | ± 0.00000880 |
| argument of perihelion [°] | 287.849478 | ± 0.000086 |
| ascending node [°] | 350.732739 | ± 0.000024 |
| inclination [°] | 33.699778 | ± 0.000015 |
| recip semi-major axis [10-6 au-1] | -507.36 | ± 1.77 |